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04-25-2017, 02:32 PM | #1 |
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O2 readiness problem
Surprisingly enough, there aren't a ton of topics on this that I found specific to the O2 readiness. My tune obviously has catalyst efficiency off so I know that wont complete. I've replaced the problem sensors and the car runs fine with no codes since I reset it last night. My only question is that by running through a standard drive cycle, how long on average does it take to complete? Does it take longer after resetting it? I also reset my adaptations when I cleared the codes. I've probably done about 35 miles with around 20 of them being highway trying to follow the standard procedure for setting it.
Is there any way that this monitor could be turned off with catalyst? I don't see how it could be since it's for monitoring the AFR and my rear o2's are switching fine and have perfect fuel trims... EDIT: I forgot to mention that my DSC is throwing D354/355/356 - but it isn't causing any trouble at all, isn't currently present - and I'm assuming it doesn't affect monitors setting for o2. |
04-25-2017, 02:41 PM | #2 |
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Depending on your tune, o2 will not complete with missing cats.
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04-25-2017, 02:49 PM | #3 |
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04-25-2017, 04:44 PM | #5 |
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Here are three shots. All of the monitors.
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04-25-2017, 05:58 PM | #7 |
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I just googled "dinan o2 readiness tune" and the first item that popped up had the same montiors you have incomplete on a Dinan M5. I don't they they will ever complete with the dinan tune.
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04-27-2017, 11:16 AM | #9 |
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Update:
I spoke with Dinan tech support yesterday and got what SHOULD have been an answer. I was explained how the tunes are created and what parameters are changed. Basically they make the catalyst efficiency monitor impossible to start through an unacheivable position in throttle/RPM. I was told that the O2 monitor diagnostic is not turned off and that after driving more, the monitor should set without trouble leaving ONLY catalyst efficiency incomplete. As of now, I've driven over 100 miles. A lot of it was above 60MPH, but almost all of it was driving like a grandma. Honestly this tune has seriously improved throttle response and a slight power gain came from it. If I'm pleased with it's performance, I can't imagine what a BPM tune is like. Bottom line, I'm waiting for a call from Dinan right now to see if I can sort this out and as far as I'm concerned they have two options. The first one is to have my Dinan dealer check this out to see if something is just wrong and the second is for me to dispute the charge because the damn thing didn't do what I was told at all and is completely worthless. The second will be followed by a purchase from BPM who actually answers the phone every time I call. I'll keep everyone posted. |
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04-27-2017, 12:53 PM | #10 |
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Some drivers go 100s of miles without ever doing a proper drive cycle. It is very specific and takes only 15-20 miles if done correctly. That is the only way to guarantee getting all monitors to readiness.
Here is one version of it: I used one similar and had success. http://www.m3post.com/forums/showpos...91&postcount=2 Last edited by Locksmythe; 04-28-2017 at 11:04 AM.. |
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04-27-2017, 09:49 PM | #11 |
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O2 will not go ready on this car with no cats, even if they don't change any o2 settings. That's just the way the calibration/code is written.
With no cats and a DINAN tune, I would expect o2 and cat to always be not ready. I think might have received a pm from you about this and I will try to reply by tomorrow, sorry have been swamped
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04-27-2017, 10:22 PM | #12 |
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The drive cycle stops if you exceed 3000rpm, 60mph or make large fluctuations in throttle. You mentioned driving over 60mph most of the time, that stops the monitor testing.
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04-27-2017, 10:40 PM | #13 | |
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Regardless, see my post above, he could drive until the end of time and it's not going ready without cats. 15-20 miles is not needed to set monitors to ready if the hardware and software is compliant. I can set most cars ready with 15 minutes of driving and two cold starts.
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04-28-2017, 08:04 AM | #14 | |
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04-28-2017, 09:11 AM | #15 |
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OP, in NY you can have a type of sensor not ready and it doesn't fail emissions
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04-28-2017, 10:24 AM | #16 |
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04-28-2017, 10:41 AM | #17 | |
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What other sensor do you have not working? |
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04-28-2017, 11:01 AM | #18 | |
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I have "Oxygen Sensor Monitor" and "Catalyst Efficiency" incomplete. As far as I know, O2 Monitor is to monitor the AFR only, but as Mike said, it depends on how it was done. Tuning is one thing I've never touched and never will. I'd blow up my car just by touching WinOLS. Hopefully Mike will have some good news for me. |
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04-28-2017, 12:35 PM | #19 | |
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04-28-2017, 12:55 PM | #20 |
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UPDATE: So after speaking with Dan at Dinan, I've been told that it took him over 1k miles one time to set one for the E9X M3. He told me it's extremely specific, but that they do not change that diagnostic function at all. It remains open, just difficult. I'm not sure if other tuners make it easier or what, but he assured me it will set. He said the only way he has ever had it set on one of these cars is by doing the following which is a slight deviation from the FTP drive cycle that BMW specifies.
1. Cold start - idle 2-4 minutes 2. Drive vehicle 20-30 mph not exceeding 3000 RPM for 15 minutes (standard cycle says something like three minutes) 3. Accelerate to between 50 and 60 MPH and remain there for 15 minutes. 4. At this point, the monitor should set on a perfect try, but he said you might as well finish the drive cycle by ending with the 5 minute idle NOTE: Absolutely NO major fluctuations in throttle or 100% at any time during this or it will restart. He told me cold start is his only chance. That's apparently it. I'm not sure I buy it, but I'll give it a shot on a completely cold start. The challenge will be finding a place to do it. You pretty much need a track or dyno to complete this perfectly, but I said it will work. It just takes a lot of time. The only reason I'm believing it is because I've never heard anything horrible about their customer service and people seem to like them, but we will see I guess. Wish me luck. Mike if you see this, your input is greatly appreciated given that you know way more about this than anyone here and my guess is that you don't have this much trouble setting this monitor. |
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04-28-2017, 01:24 PM | #21 | |
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04-28-2017, 02:42 PM | #22 |
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Good luck OP
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